Segmental pump lever for use with driving means of differently constructed engines



May 9, 1950 M. KATCHER 2,507,339

SEGMENTAL PUMP LEVER FOR USE WITH DRIVING MEANS OF DIFFERENTLY CONSTRUCTED ENGINES 2 Sheets-Sheet 1 Filed April 6, 1946 w un III Mama/s KA 7095?.

wwz/az ATTORNEY INVENTOR Mom/s K? rah Ea BMW I ATTORNEY M. KATCHER SEGMENTAL PUMP LEVER FOR USE WITH DRIVING MEANS OF DIFFERENTLY CONSTRUCTED ENGINES 2 Sheets-Sheet 2 May 9, 1950 Filed April 6, 1946 and 33. Readily removable pin 13 passes through removable segments 35 and 36 and arms 37. Pi

I3 is readily removed when spring clip 13, Fig. 8, is pulled out from under its head. Arms 31 are provided with punched out tongues or projections 43 against which prongs 38 bear when segment; 35 i caused to rock or swing in a clockwise direction. A clip M has a hooked portion 45 which bears on sleeve 4!. It also has two lugs 46 which enter corresponding openings 95 in arms 3?, see Figs. 1, 3, 8 and 11. Tongue 41 on clip i4 receives the lower end of spring 48, the upper end of said spring reacting against the pump casing 15. Removable lever segment 35, Figs. 1 and 2, is provided with a cup 49 for receiving the upper end of actuating bar l2, the latter reciprocating in guide 53. The lower end of bar l2 rides on cam fixed on motor shaft 52.

When bar It moves up, removable segment 35 interlocks with standard segment 33 turning it clockwise, prongs 38 bearing down on tongues 43, prongs 33 bearing up against and rotating about sleeve M, and the main body of segment 35 pushing up on pin 13. Under pressure of spring 48 and as cam 5| rotates and lets bar l2 come down, removable segment 35 interlocks with standard segment 33, by means of pin l3 and sleeve 41, turning it counterclockwise, clip l4 bearing down on pin 13, its lugs 43 bearing down on arms 31 and tongue 45 bearing down against and rotating about sleeve 4|.

The inner end of standard lever segment 33 is provided with anotch in each of its arms 31 by means of which it engages pin 53 set through stem 21, an arm 31 coming on either side of said stem.

When the operating lever, comprising interlocked segments 33 and '35, rocks in a counterclockwise direction, the inner end of segment 33 pushes up on washer or ring 3i, which, through the intermediacy of spring 32, raises diaphragm 20 for its compression stroke. Spring 32 has a predetermined amount of initial compression.

When the operating lever rocksin a clockwise direction, the inner end of segment 33 solidly presses down on pin 53, efiecting the suction stroke of the diaphragm. In Fig. l, diaphragm 2B is at the upper limit of its stroke. This means that the pressure in fuel pump chamber 54 and K outlet 55, which is connected to the carburetor by a fuel line, both the carburetor and the fuel line not being shown, is lessthan that required for spring 32 to yield, and that pin 53 is in contact with segment 33. pump chamber 54 in a subsequent compression stroke of diaphragm 20 be great enough to overcome the initial compression in spring 32, the inner end of segment 33 will rise without corresponding rising of stem 21, so that pin 53 will be located below the lower edge of said segment. In other words, there will be lost motion between segment 33 and stem 21. Under this condition, upon subsequent clockwise motion of the operating lever, which of course includes segment 33, there will not be any pull upon stem 2? at the beginning of the rotation of said segment, the latter catching on pin 53 only toward the end of the stroke. The reciprocation of diaphragm 20 by the operating lever through the intermediary of a spring, such as spring 32, is also described in my applications Serial Nos. 500,782, 633,333 and 644,535.

Fastened to the top of cover 22 at gasket 56, is glass strainer bowl 51 which is held in place by Should the pressure in fuel r the engagement of bail 58 with lugs 59 on the cover. Bail 58 presses bowl 5! down on gasket 56 through the intermediacy of bolt 50, nut 51 and cap 52 as is well known in the art.

Cover 22 has two openings therein leading from fuel chamber 54. In one of said openings is set inlet check valve 63 and in the other is set outlet check valve 64. Cover 22 has a hollow cylindrical portion 65 extending up into bowl 20. At the bottom of portion 65 is inlet check valve 53 which allows the flow of fuel down from the inside of portion or tubular member 55 into fuel pump chamber 54 but not in the reverse direction. Cover 22 is provided with a fuel inlet which can be connected to the fuel tank, the inlet and tank not being shown. Fuel is delivered from the inlet to the space in the bowl outside of portion 65. An annular flange or baffle 55 is mounted on top of tubular member 65 so as to surround the latter. Screen Bl is mounted over the open upper end of portion 65. Baiile 66 acts to prevent any sludge which may have settled outside of portion 65 from reaching screen 61.

Screen 61 and flange 66 are held down on member 65 by spring 58, the upper end of which reacts against the inside top of bowl 51. The fuel flows through screen 61 into the inside of portion 65 and through check valve 63 into fuel pump chamber 54 when diaphragm 20 is moved downward, that is, has its suction stroke. Upon the upward or compression stroke of diaphragm 20, the fuel is forced through outlet check valve 84 into passage 59 and then through a second check valve it, which happens to be in this particular embodiment a ball check valve. Ball 73 is held to its seat by spring 89 which is stiffer than the spring, not seen, in valve 64. The particular fuel filter just explained is also described in my application Serial No. 644,535 and the double outlet check valve in said application and in application Serial No. 619,710 of William Hicks and myself. From check valve Hi, the fuel passes out of the pump through outlet 55 which is usually connected to the carburetor of an internal combustion engine. The use of the second check valve as shown has been found by experiment to act, instead of the usual air dome, as a pulsation dampener, that is the fuel flows from the pump to the carburetor in a substantially steady stream.

The pump and lever of Figs. 8, 9 and 10 illustrates the case where the same type of pump as is used in Figs. 1 and 2 can be used elsewhere to suit a different type of motor with a different relative position of its cam shaft II. The only difference between the pump of Fig. 1 and the pump of Fig. 9 is in the removable lever segments 35 and 36. The construction and action of all the other parts is the same as that described before for Fig. 1. Segment 36 is formed with an angle between its portion having prongs 33 and 33 and its portion having bridge piece 72, the latter riding on cam 5|, the pressure of spring 48 holding it there.

In Figs. 5, 6 and '7, both the standard lever segment l4 and the removable lever segment 15 differ from the corresponding segments shown in Figs. 1 and 9. The standard lever segment is formed of two arms '16 held together by rivet 8|, the notched inner end of said arms straddling stem 2'! and being adapted to engage pin 53. Arms 16 are pivotally mounted on sleeve 4|. Removable segment !5 is formed of two arms 18 having between them a spacer block 85, all three parts being held together by rivets l9 and 80. The inner end of segment 15 is provided with a pair of upper prongs 83 and a pair of lower prongs nappies el said prongs-straddling sleeve 41 and providing segmentlS with a rotating fit thereon, Prongs '83"and84 interlock with-punched out bulge or projection 82 on arms 16. A lug Bti'sprovided on spacer block 85 for receiving the bottom of spring" 48. Removable segment 15 is pinned to standard segment it by removable pin 81, the latter being kept in positionby spring clip 88 under its head.

I claim:

1. A lever for use with driving means of an engine-for operating 9, pump of standard design with a pivot for the mounting of the'lever, said lever comprising two segments, the first of said segments being standard and mounted on the pivot for rockably mounting said first segment onthepump, the second of said segments over lapping the first and having 'readily separable interlocking engagement with it at a plurality of locations other than at the pivot, the second segment bein provided with a notch, engaging and containing the pivot in the notch, one of the legs formed by the notch passing on one side ofthe pivot and the other of said legs passing on the other side of the pivot, said second segment being rockable in both directions together with the first segment in fixed relation therewith and being adapted to engage the driving means of the engine.

2. Allever for use with driving means of an engine' for operating a pump of standard design with a pivot'for the mounting of the lever;' said lever comprising two segments, the first of said segments being standard and mounted on the pivot, thesecond of said segments being notched and set on the pivot at the notch, the open end of the notch being toward the inside of the pump, a lateral projection on the first segment located toward the inside of the pump from the pivot, the second segment havin a portion extending into the pump beyond the pivot into removable engagement with said projection, and readily removable means for fastening both segments together on the side of the pivot away from the pump, said second segment being of such form on the latter side to engage said driving means.

3. A lever for use with driving means of an engine for operating a pump of standard design with a pivot for the mounting of the lever, said lever comprising two segments, the first of said segments being standard and being made of two plate-like arms, the flat of one arm being substantially parallel to the flat of the other, means for holding the arms in spaced relation, the pivot passing through aligned holes provided in said arms for pivotally mounting them on the pump, the second of the segments also being formed of two substantially parallel plate-like arms, means at their end outside of the pump for holding the latter arms together in such spaced relation to come alongside of the arms of the first segment, the arms of the second segment being notched and set on the pivot at the notch, the open end of the notch being toward the inside of the pump, a lateral projection on each arm of the first segment located toward the inside of the pump from the pivot, the arms of the second segment extending into the pump beyond the pivot into removable engagement with said projections, and a readily removable pin set through aligned openings in the four arms on the side of the pivot outside of the pump, said second segment being of such form on the latter side to engage the driving means.

4. A lever for use with driving means of an eng ne ror operatii g pumps-r Sta-riders sent with a pivot for the mountin of the leve r, said lever comprisingtwosegtmfits, the firstf'df' said segments being standard'fand having the" pivot pass through a hole in it "for" pivotally mounting said firstseg'i'nent ori'the" pump; the second-of said segmentsbeingriotched to form upper; and lower prongs, said second segmentbeing, set'j on the"'pivot atthe notch; the-open end ofthe' notch beingtoward" the ir'iside'of the pomp, a lateral projection on the first segment located toward the inside of the'pum'p'rrom the pivot, said upper prong being" in readily" removable engagement with" said projection, and readily removable means for fastening both segments togetheron theside of the pivotaway from the-pump,"s'ai'd second segmentbeingfof such form'on the latter sidetoengage" said driving means. H g

5. A lever for use with drivingme'ans'of an engine forl'operating' a, pump of standard design with a pivot for the "mounting of the lever, said lever comprising two segments; the first of said segments being standard and having the pivot pas through a hole i'n'it for pivotallymounting said first segment on the ump, the secondof said segments being notchedto'formppper and lower prongs, said secondseginent being set' on the pivot at the notch,1 the open endof the notch being toward the inside of the pump, a lateral projection on the first segment located toward the inside of the pumpTfrom the pivot, said prongs straddling'the projectionin readily re movable engagement therewith, andfreadi'ly-removable means for fasteningboth segments-to gether on the side of the pivot away from the pump, said second segment being of such form on the latter side to engage said driving means.

6. A lever for use with driving means of an engine for operating a pump of standard design with a pivot for the mounting of the lever, said lever comprising two segments, the first of the segments being standard and having the pivot pass through a hole provided in it for pivotally mounting the first segment on the pump, the second of said segments overlapping the first and having a readily separable engagement with it at a location toward the inside of the pump from the pivot, a readily removable pin set through openings provided in both segmentson the side of the pivot away from the pump, said second segment being of such form on the latter side to engage said driving means, a clip hooked over the pivot'at one end and having its other end rest against said pin, and a spring extending between said latter end of the clip and the pump, pressing the clip against the pin.

7. A lever for use with driving means of an engine for operating a pump of standard design with a pivot for the mounting of the lever, said lever comprising two segments, the first of the segments being standard and mounted on the pivot, the second of said segments having a readily separable engagement with the first segment at a location toward the inside of the pump and at a location on the side of the pivot away from the pump, said second segment being of such form on the latter side to engage said driving means, a clip engagin the pivot at one end and engaging the first segment at its other end at a location on the side of the pivot away from the pump, and a spring extending between said latter end of the clip and the pump, pressing the clip to swing the lever as a whole.

8. A lever for use with driving means of an engine for operating a pump of standard design with a pivot for the mounting of the lever, said lever comprising two segments, the first of said segments being standard and being made of two plate-like arms fastened flat against each other, said arms being mounted on the pivot, the second of the segments also being formed of two platelike arms fastened together in spaced relation to overlap and embrace the arms of the first segment, a lateral projection on each arm of the first segment located toward the inside of the pump from the pivot, the arms of the second segment extending into the pump beyond the pivot into removable engagement with said projections, and readily removable means for fastening both segments together on the side of the pivot outside of the pump, said second segment being of such form on the latter side to engage the driving means.

9. A lever for use with driving means of differently constructed engines for operating pumps of the same design, a spring provided on the pump, the driving means rocking the lever in one direction against the resistance of the spring,

said spring rocking the lever in the opposite direction, said lever comprising two segments, the first of said segments being the same for all pumps of said design and pivotally mounted thereon, and the second of said segments being readily removably attached to the first of said :3

8 vided on one 01' said segments for engagement with the spring.

10. A lever as claimed in claim 9 in which the means for engaging the spring is located on the first segment.

11. A lever for use with driving means of differently constructed engines for operating pumps of the same design mounted on said engines, a spring provided on the pump, the drivin means rocking the lever in one direction against the resistance of the spring, said spring rocking the lever in the opposite direction, said lever comprising two segments, the first of said segments being the same for all pumps of said design and pivotally mounted thereon, the second of said segments being of a form to reach and engage REFERENCES CITED The following references are of record in the file of this patent:

V UNITED STATES PATENTS Number Name Date 539,602 Aronson May 21, 1895 654,643 Johnson July 31, 1900 1,893,217 Babitch Jan. 3, 1933 2,344,286 Creveling Mar. 14, 1944 

